Drilling and inserting mechanism for brush machines



Nov. 28, 1933. 1.. B. TERHUNE DRILLING AND INSERTING MECHANISM FOR BRUSHMACHINES Filed May 23, 1929 85heets-Sheet l AZ RNE Y INVENTOR iql H11Nov. 28, 1933. L B TERHUNE I 7 1,937,101

DRILLING AND INSERTING MECHANISM FOR BRUSH MACHINES Filed May 25, 1929 8Sheets-Sheet 2 &

INVENTOR I A'I'TORNEY-S Nov.

1933- L. B. TERHUNE 1,937,101

DRILLING AND INSERTING MECHANISM FOR BRUSH. MACHINES Filed May 23, 19298 Sheets-Sheet 3 2 BY {gaymoa Nov. 28, 1933. L. B. TERHUNE "1,937,101

DRILLING AND INSERTING MECHANISM FOR BRUSH MACHINES 8 Sheets-Sheet 5 IINVENTOR TTORNEYS M Huff!!! lluh Mill "WW L. B. TERHUNE Nov. 28, 1933.

DRILLING AND INSERTING MECHANISM FOR BRUSH MACHINES Filed May 23, 1929Nov. 28, 1933- L. B. TERHUNE 1,937,101

DRILLING AND INSERTING MECHANISM FOR BRUSH MACHINES Filed May 23, 1929 8Sheets-Sheet 6 RNEYS Nov. 28, 1933. L. TERHUNE 1,937,101

DRILLING AND INSERTING MECHANISM FOR BRUSH MACHINES Filed May 23, 1929 8Sheets-Sheet INVENTOR roRNEYs Nov. 28, 1933.

| B. TERHUNE 1,937,101

Filed May 25, 1929 8 Sheets-Sheet 8 ll O I 1: I 7 x 155 i 4 53 Z29 3"139 158 155 0 729 Zeazazzi y'rlcme wring.

Patented Nov. 28, 1933 DRILLING: AND IINSERTINGMECHANISM .FOR iBRUsnvrAomN s i r Leonardi B.Terhune;'Newark, rTNLiJwassignor sto Du PontWiscoloid Company, :Wilmington, DeL, yamorporation of DelawareApplication May 22,1929. seriarnossea ss I m-Claims. (closes-:3)-

chine which is applicable to machines in "which,

the brush:blanksaredesignedto be held orgmoved in anymanner,-althoughthemachine made intacclosed in :my application entitledrBrush holders forbrush :making imachines, :s'erial-No. 338,978, filed February 11, 1929.3The objectofmy inven- 1 tion is toprovide, 'also axmechanism comprisingoperating parts which includes :multiple drilling andmultiple insertingdevices for use;if. desired,

inconnection with :a. singlebrushiholder-mechanism, such asthat; shownin'my application above referred to, and which, nevertheless, ise'embodied in -a :unitary J'mechanism. I --Again, 4 the .object of myinvention'is especially tofiprovide'a'mechanism for: operating :thedrilling and r inserting devices which is not only applicableto-=many:diifer'ent methods of holding and moving .thebrush blanks, butwhich is compact and which,\therefore ,vmay beconstructed and maintained'atiarminimum of expense and. with: a minimumiamoimt :of labor.- I haveaccomplishedithis end particularly by reason of therfact.that:thedrilling'andinserting mechanism is operated from .aa, cam shaft whichyislocatedesubstantially' "centrally the machine, This is of.particular=importance, :also, by reason of the fact that this camshaftmay. also :be the main-gshaft operating the brush holder :holding theblanks for co operation. with the. drilling and inserting .imechanism.Another 4 object .is to provide .an interchangeable and readilyreplaceable nozzle unit so that the nozzlelof the'bristle in} sortingmechanism, including'the operating'parts,

immediately associated therewith 'may be 'removed as a'unitfor'jinspection, repairs eplacementfetc. Similarly, another object is toprovide an'interchangeable and replaceable bristle picker unit. Also,the object 'of my invention is to provide aninterchangeable' armholdingunit so that thesame' may bereplaced byiotherisimilar units whenrepairs are needed, or when brushes of idifferent types' aredsiredzto bemanufactured inwhichltheiplacingof the-holes in the .brushcordance-"with my invention is especially applp cable for use inconnection-with the machine'disv-z Figr 2 -is \a .side--. elevation ofthe same;

aresmade 'and the rolls for feeding same;

blanks .is sufiiciently different to' requirera ,different :locationf orthe multiple drills iused inthe machine. This -arra ngement 'of the,parts also permits, :as will bexreadily.--understood,-the:different-parts of .themechanism, and especially-one on or-Jnore of-the.multip1e sets of interchangeable nozzle units'and pickerunits, toberemoved w'itlri-v outrinterfering with the operation of :thejremainingunits which are-contained the machine .while'theothersare beingrepaired, rep1aced, etc. 5 J

Further object of -my. invention will appear from the detaileddescription of ith ersame Zhereinafter.

While inyinvention .is capable of embodiment Y inrmany differentforms,,,for the purpose of illustrationl haveshownfl'o nly oneembodiment70, of my invention in the accompanying drawings, inwhichfl .EFig.- -.1is a .planviewof a :drilling :and filling machine madesin accordancewith my invention;

Fig. i3 isnafront view. of the. same; ,-Fig. Aisa horiaont'al section of:thesamej Eig,-:5 is a rear, elevation partly in sect,ion;- Figwfi ,isawtransverse vertical section showing the,-nozzle:unit; I l '80 -Eigw'l'is a-yerticalgsection of- .'tl er s ame taken. I atirightianglejto. thesectionshown in.-Fig. 6 .-:Fig; 8ris a idetailiperspectiv'e VieW ftheneedle bar and. needle; :Eig.;.9.. isra fragmentary perspectiveenlarged, showing thepicker andpicker knif e I opei sv k v w 1 N Fig. 10is an'enlarged zdetailin section showing the arrangement ofthe pickerandpicker knife in;,the removable unit .co'ntaining- .the' same;

,eFig 12 is-anenlarged-fragmentary perspective viewvshowing 'the wir efrom which the anchors .-Ei g. l3-isa fragmentaldetail section ofa-brush blank showing the bristles "as'carried in'one, of theholesandr'heldgtherein by the anchor? made from the Wire referred to; T

--Eig. l4 is a vertical'section throughthe'brush holder mechanism; and Yi.

.-Fig. l5 is anelevation of aspringplunger used as a pawliin-connection'therewith. v

,In the a-machine which I have shown, by way of illustrationof myinvention, the arrangement is applicable for use. in the manufacture ofbrushesvof any de sired type, or kind, .but is especiallyapplicable tothemanufactureof toothbrushes," by way of example.'- In thi'smachinelhave 1 shown :a :main operating; shaft l carried in 110 l-l-isanenlargedhorizontal section show a -ingpthe picker and picker knife;

any suitable bearings 2 supported on a 'main frame 3, and securedthereto by bolts 3a, carried on a base 4, which is shown in Fig. 2 witha broken line at the part thereof which may be extended so as to form asupporting base for any desired type of brush holder mechanism, as, forexample, that shown in my application hereinabove referred to; It willbe understood that the shaft 1 may, and preferably is, the same shaft asthe main shaft contained in the said brush holder mechanism in myapplication as referred to above,

said shaft being provided in the said'brushholder mechanism with anydesired journal bearings for this end of the saidfshaft." This mainshaft-1 may be driven from any suitable source foflpower, as, for example, bymeans of a pulley 5 tightly mounted on theshaft 1, carrying aband 6 onits periphery designed to be driven from any suitable source of power,as, for example, anelectric.

motor, etc. Mounted on said pulley 5 there is a ring gear --'7 whichdrives aseries of six intermediate gears 8, 9,10, 11, 12 and 13, whichare mounted onstud shafts 14 carried'inja removable spider 15 adapted tobe secured to the journal bearing Z'bymeans of screws 16. These gears'8, 9', 10, 11, 12 and 13 are providedfor theoperation of sixdrills'l'l, 18, 19, 2 0, 21 and 22, 'all of which are driven by asuitable train of gearing to a drill spindle 24a carrying the drill 17rotat-' ing in a bushing 25 in the said spider 15, and provided with adrill chuck 26 of any desired type on 'a spindle 24a. The drill spindle24a with the attached gear 24 is arranged to be longitudinally slidable,manually out of engagement with the brush blank by means of a slide-26a having a 'thumbpiece-26b for'the movement of the same,

and a slot26c for receiving a'screw 26d which is tightened in placeduring the time when the drill'l'l is to be operated but whichwill beloosened when it is desired to throw the particular drill out ofoperation. Arecess'2 6e in'the'slide 260i cooperates with aspring-pressed ball 26f in the retracted position to hold the drill inthe in operative position forrepairs, replacements,-etc. The slide 26::is connected to the spindle 24a by means of a yoke 26g located in anannular re-' cess 26h on the face ofthegear 24.

It will be "understood that the machine is '1 equipped, not only withmultiple drills as above escribed, but also with duplicate insertingmechanisms'for inserting the bristles into the brush blanks, althoughonly one of such inserting mechanism will be described in'detail as bothof them are constructed and operated in exactly-the same manner,exceptthat these two inserting'mechapositesides of the machine. 65

' nisms are constructed as right and left-hand devices, respectively, asthey. are located on op- The shaft '1 on the "other side of the spider15 from the gearing just described, carries a cam wheel "27 having a-camgroove 28 inits facein which there is designed to be moved a roller 29forop'erating the picker; This roller 29is carried on a stud shaft 30:passing into a picker'bar 31 which is guidedfor transverse movementwithin a u-shaped picker knife bar 32. Both the picker bar31 andthepicker' knife bar 32 are arranged to reciprocate in a groove 33 inthe mainframe 2.- At-itsend the picker bararhas a right angle extension34 which rests within a recess 35 in the picker 36, which reciprocatestransversely of the machine in a groove3'7 10-, cated in a removable bar38 adapted to be secured to the main frame by means of screws 39. Acover plate 40 fits over the top and side of said picker 36and issecured to said bar by means of screws 41. It will be noted that thepicker 36 has a vertical recess 42 toenable it to pick a'charge ofbristles from a bristle feeding passageway 43 provided with, acontinuously fed supply of bristles 44; supplied thereto from anysuitable bristle feeding mechanism, as, for example, the mechanism asdisclosed in my applicationl pon Bristle magazines for brush makingmachines, Serial 'No. 338,979, filed February 11,1929, it being unederstood thaton the opposite side of the machine there is aduplicate'o-f this bristle'feeding mechanism,.'except that the twofeeding mechanisms opposite side of the machine, This-picker knife 45 ismoved by means of a right angle extension 48 resting within a'recess49in the side of the picker knife 45, which-right angle extension iscarried upon the picker knife bar 32. This picker knife bar 32 is movedby means of a-cam roller 50 which operates within acam groove 51 in theadjacent to, the cam wheel 27.

In order to feed :to the mechanism awire' 54 face of a camwheel 53carried on the shaftl F'from which there is' to' be cut fiat anchors 55,

the main frame. The feed roller 56 is operated by means of a ratchetwheel '63 securedrth'ereto, and which is driveniby means of a springpressed pawl 64 carried in an arm 65 pivoted. on the shaft carrying thefeed roller 56. This arm 65 has on its'outer end a roller'66 whichis'held against an outer camperiphery 16.7 of the cam wheel 27 by means ofa spring 68 extending from: the arm [,65to the spider 15; -In this waythe wire'54'is fed across a recess 69' in which there is arranged toreciprocate a punch'WO, securedfin-a groove 7 iQn'theface of a block'71, carried in a vertically reciprocating'b'ar 72 which is arrangedltorecip and thence'into 'a slot '75 in a lever 76 carried onafixed pivot'7 7by the main frame, which lever ,76 has a'roller 78 adaptedto bemoved by a cam groove '79 in the front face of the cam wheel53. Likemechanism is provided on the other side of the machine for operatingthepunch on that side of "the same, the sameiroller 78 being provided forthis purpose and. having a pin extension 780;,

onwhich'said roller is pivoted, for cooperating with a slot 'lsbinithessaid-levenron thezothersside .aof the machine.

:Inaorldertocompleteltheinsertiomof.thebristles -with the. anchor :intoa brushzblankZBO, which ;is zsupported :on any ssuitablexbmshrblankholder 81,:such,: for .example, vaszthat shown inrmyiap- ,plioationSerial No. 5338;978 eabovelreferredtto, I :have provided a'needleoperating is comprised .of 1 a earn-wheel 82 ialsomounted ftight :onztheshaftll, and'wvhich furthermore, arranged :to esupport inriplace ;the

nozzles 47 and 47a towhich the :latter is secured by screws 86a. Acover1plate-86b is'zalso provided over the rear end= of thechannelashaped :box':86 to which it is attached vthy :screws 86c. :Aneedle 89 is secured "in the 'top' of 2a :projection90'on .therbar'85 bymeans of aclamping plateQl having SClfeWS 927tOliO1d the :same in,

place thereon, a thumb recess 93' being" provided at one side thereof topermit i'the ineed-le :89 -.to ibelgrasped for the adjustment of v thesame :lon- ,gitudinally of the bar "85. This :bar is so located withregard to the :nozzle =47 as tow-adequately support the needle -89without danger of bending orbreaking the same and without requiring thesoldering thereto ;of'. any ibracing or holding member at the rearsofthe asame. This is accomplished in the following imanner: The nozzle-47is divided into a.lower.,grooved portion 94 having a groove 95 therein.for carry- .ing the said needle, :andan upper portion 296 for: coveringthe same, vboth portions being cut out to, provide :an opening97'rextending-entirely through the:.nozzle vertically :and such a ipoe.sition -as to-support--one half of' the width of the i needle, as shownin --Fig. -=4, when the needle retracted position. Thisprovides'iansade- ,quate support for the needle, 'byisupportingrone halfof the-width of thes'same during the initial travel, of the needle whenno great strengthiis required therein, and-when the loadiisttakenr-up bythe needle .the 1808855 97115 almost entirely closed :by the :bar 85sand 'thereby Zleaees only a :negligible :portion '"of :the :needleLunsupported at this period of the operation. :Thennoveme'nt of theneedle 89 is thusvcooirdinated with-the movements of the pickermechanism, iand the anchor punchmechanismssoithatztheisaid: needle, whenit' reaches the .naperture e69, *willipic'k iup thezanchorf55rand thetuftr'of. bristlesiinza'dvance of I the same thus, folding the bristlesand :torcing the tuftof bristles with theanchorzbetweenzthe fold outthrough the end Of iIhBZIIOZZIQA'I into the brush blank '80byzcausmg-itheianchor 55 to cut slightly into .thessides 'of .theidrilledhole of the :brush 'blank until "the tuft cof :bristle's is thussecurely anchored :at t-ithe'ibottom 0f 'the drilled hole. It willzbe*und'erstood lthat 'when the tuft o'f bristles with the anchorf 55carried in the rear thereof, reaohesl'thefposition where moval of-ion'eset=.'o f.imechanisms. 7 Jdesired'a-to f remove the; insertingmechanism; this :org-iif :deSired, onezof'wthem'imay beiremoved at .anytime'fwithout3 interrupting the operation ,of the cother, ltherebyrcontinuing 'the operation of i-the thrush blank holder,notwithstandingltheire- When it :is

is readily aocomplished irmerely by ivremoving the screws r87 *and z88and lthen pivotingxthe unit V upwardlyon thezrollenil until the adjacentiparts "areloleared. I g

:Likewise,* it will be understood that I the picker .unit :may-tbereadily removed by removing "the screws :39 zand lifting the :same TawayJ from the right *angle extensions 34 and 48 so that I a new,picker-i-imechanismrmay "be inserted, and'so'ithat, if desired, theoperation of :the :machine may be continued without interruptionas tothe remaining gpicker .mechanism in the apparatus; .r-As above-noted,there .areyprovided in'the machine .twois'ets :of drills 17,.18 andl9and 20, 21:and:22, which are provided, for :preparing: the holesin; thebrush blanks forthenozales'la andlrespecg tively. l The -last-drilltofthe particularsset, just before :its particular. nozzle, :may, ifdesired, :be I provided with a reamer. :However, theim'ainipurpose 10fproviding the plurality of drills,-all 10f .which arefdesignedto drillthe sameaholes three times inrsuccession forthemarticular nozzle, is topreventwstoppages and interruptions in the :op'eration.of'theiniachine,owing tothetfact that one of the greatest-causes in the ineffeotiveoperation' ofwbrush makinglmachines is the inaccurate and twicerandreamed once the holeswill :acquire a uniform size'iand shape and thusgreatly conduee-fto the effective :and uninterruptedoperationofzthermachine. Furthermore,it will be real ized, nevertheless,that,-if :desired,=one or twoiof theg-roup'of threedrillirigoperationsmay be dispensed' with, :either voluntarily-or due tobreaktheltime being thecontinued'operationof-the ma chine as-1awhole.Besides, if more than twozo'f the-5drillsiof aset are thrown out ofaction,!acci- "den-tally :or otherwise, the insertingkmechani'sm whichits used to' cooperate therewith may be 'agesfgtherein,without-necessarily preventing, for 25 thrown out:of .operationso astoallowthe re- 1 mainder ofthe machine to operate, and even thein'sertingmechanism'of one set and the series "of drillsdf'the other'setmay besi'rnultaneously out of operation sothat the remainingiinsertingand drilling mechanisms may be used for continued operationwithout'shuttin'g down the machine.

Thus, it"willbe seenthat the multiple drilling and inserting mechanismsenable theim'achine to be maintained in operation without thedisadvantageous interruptions, and high cost-of maintenance, that havebeen prevalent in brush making machines, which havebeen the cause ofhigh cost .of. production in themanufacture of brushes-to a Verylargeextent. Furthermore, .theinaintenance of the machine greatlyfa'cilitated by the compactness of the construction involving theuseotaeeritral operating'shaft for 'operating the drilling 'and insertingmechanisms by cams carried thereon.

7 Figs; 14 and 15 show the. brush holder mechanism'adapted to be used inconnection with the applicants invention, which is the same as that,shown in the applicants co-.-.pending ap.' plication upon Brush holdersfor brush making machines, vSer .No. 338,978, filed February 11, 1929.In the said brush holder mechanism I have shown a main shaft 101 carriedin a frame 102,.which shaft has connected thereto means for driving. thesame at any desired speed from any suitablesource of power. Surroundingthe shaft 101 there is'provided an annular diskshapedbrush blank holder105 adapted to receive a succession of brush blanks 106, as, forexample, tooth brush blanks, which may be continuously fed thereto byhand, or otherwise, at

"is provided with projections 109:2,1091) to fit around theends of andtightly hold the brush blank in place while being operated on fordrilling or filling. The carriage 109 is supported by two links 110 and111, by means of a. ball and socket 'joint 112 and pivot 113 allowingacertain amount oflateral play between the lever 111 and said pivot 113to secure the accurate positioning of the carriage 109. Thepositioningof the. carriage109. The positioning of the carriage 109 isaccomplished by'means of a pin 114 projecting from the frame, and havinga point 115 with a veryacute angle at the point of the'pin 114 toaccurately fit within each'one of a series ofcountersinks 1160fsubstantially the same shape asithe face of the brush blank 106, in therear face of the carriage 109, one of said countersinks 116 beingprovided for. each of the holes to be drilled and filled in the brushblank 106. This pin 114 is normally held in reinstead the fillingnozzle.

plunger 11'? having an obtusely shaped point 118, I

tractedposition by a spring 115a, cooperating with" a'shoulder 15bthereon, and the pin-is moved forwardly by a plunger 1150' thereon,

' having 3 an interposed spring 11511, which "is moved by an" adjustingpin 1156 contacting with said plunger." It is by this means that thebrush holder 109 is pushed forward to the drill 115;. or

, fits also in a similar series cf-countersinks 119 for roughly holdingthe carriage in its position between the intervals of accurateadjustment by the point. 115-and while the blank on the car riage isnotbeingxoperat ed on for drilling and I filling. Said-plunger 117 issupported in a sleeve 120 forming apart of a slidingflfrarne 123to whichlevers 110 and 111 are secured by pivots 121 andf122, 124 projectingforwardly from the blankholder which fram is carried on a pin 105. Aspring retracted guiding rod 125, furthermore, is provided with aconnecting pin 126, secured in an opening 127 in the sliding holder 120for guiding and supporting the same. A

' spring 127d provides the plunger 11'? with a light 'ers 109 initially;

A spring-pressed nozzle secured thereto.

counter shaft 128a, said cam-128 having a cam surface 129 forcooperating witha roller 130 on anarm 131 carried by-a sleeve 132 which:has a flange 133 engaging with yokes 134 or bell crank levers 135,-which are pivoted to the main frame and .carry yokes 136 havingreleasable'engagement with rollers 13'? attached to the inner end of thecarriage 109., The releasable movement referred to is due to the openyokes 1 36 inwhich the rollers 13'? are received. This permits thedisengagementof those of the blanks not'being' tactwith the cam 123.This cam 128 is moved.

by a ratchet wheel 139 on the shaft 12811, which 141', having a looseconnection, by a link 142 to a reciprocating frame 143 supported by asleeve in turn is moved by a pawlt140 on a lever arm Y 144 on'the shaft101 inside of the sleeve 132. -A-

cam 145 on the main. shaft 101 contacts witha roller 146 on thereciprocating frame 143 so as to move the 'same at the proper intervals,

thereby rotating the cam 128 and moving the frame 143, which carried theadjustingscrews 115:; so as to move thepoints 114 forwardly and in turnbring the brush holders 109lup to the drills'and nozzles.-Thisreciprocating frame 143 also has arms 14'? for insuring theretractionof the guiding rods 125 to their initial position, thusdefinitely positioning the brush blank hold- In 'order to rotate thedisk-shapedholder 105 from one row of holes to another, and from oneblankto another, the lattercarries a circular rack 148, adapted toslidably interlock with the main frame 102, having teeth 149"corre"spending to the movements from one row of holes to anothr'and from oneblank to another.

As shown in Fig. 15, a spring pressed plunger 150 is provided for'movingthe rack 148 which is changes may be made therein without departingfrom-the spirit of the same:

I claimi 1. A brush making machine comprising a single holder formultiple brushiblanks, a multiple unit mechanism forzsimultaneousduplicate operation'onthe brush blanks of saidlholder, and a shaft foroperating both the brush blank holder and said mechanism thelatterhaving. a cam on said shaft, for operating said mechanism.

, 2. A bristle inserting mechanism comprising a nozzle, a needle, aneedle operating membenand a detachable holding means for the nozzle,needle and operating member enabling them to be removed as .a unit,-saidholding means having the 3. Abristle inserting mechanism comprising anozz1e,a needle, a needle operating member, and a detachable needleoperating member for thenozzle, needle and-holding means,.enabling themto be removed as a unit, said holding means having thenozzle securedthereto and "forming a channel for'the reciprocation of the needleoperating member. I

and a needle operating member for moving the needle, said nozzle beingcut away laterally while permitting the support of a part of the widthof v the needle during the withdrawal of the same, and said nozzle beingseparable on a plane transverse to the cut away portion and providedwith a groove adjacent to said plane for receiving the needle.

6. A bristle inserting mechanism comprising'a nozzle, a needle adaptedto reciprocate therein, and a needle operating member for moving theneedle, said nozzle being cut away laterally while permitting thesupport of a part of the width of the needle during the withdrawal ofthe same, said needle operating member having aclamp for adjustablyreceiving the needle.

7. A bristle inserting mechanism comprising a picker, a picker knife,and a stationary holder for receiving the picker and picker knife,adapted to be removed as a unit.

8. A bristle inserting mechanism comprising a picker, a picker knifeco-operating therewith, and

. a stationary holder for receiving the picker and picker knife, adaptedto be removed as a unit,

said holder having a removable cover for retaining the picker and pickerknife in place.

9. A brush drilling and filling mechanism c0mprising a bristle insertingmechanism and a pluoperating the inserting Y mechanisms.

nism, one or more of saiddrills'being adapted to remainder of thedrilling mechanism.

'bethrown out of operation withoutafiecting the a 11. A brush drillingand filling mechanism:

comprising a plurality of brush inserting mechanisms and-a plurality ofsets of drills for'repeating the'drilling of a given hole tobe filled bythe inserting mechanism. i

12. A brush drilling and filling mechanism comprising a plurality ofbrush inserting mechanisms and a plurality of sets of drills forrepeating the drilling of a given hole to be filled by the being adaptedto be thrown out of operation without afiectingv the remainder of the:drilling finserting mechanism, one or more of said drills 14. A brushdrilling and filling machine coinprising a drilling mechanism, aplurality of bristle inserting mechanisms, and a single cam shaft foroperating the same having a cam for 15. ,A brush drillingand fillingmachine comprising a plurality of drilling mechanisms, a plurality: ofneedles and bristle inserting mechanisms, and a single cam shaft locatedcentrally of the other elements for operating the same having a cam foroperating the inserting mechanisms and a cam for operating the needles.

16. In combination, av brushblank holder,fa brush drilling and fillingmachine comprising a plurality of drilling mechanisms, a plurality ofbristle inserting mechanisms, and a single cam shaft located centrallyof the other elements for operating the same, said shaft being theoperating shaft for the brush blank holder;

LEONARD B; 'rERHUNE.

CERTIFICATE OF CORRECTION.

Patent No. 1,987,101. November 28, 1933.

LEONARD B. TERHUNE.

It is hereby certified that error appears in the 'printed specificationof the above numbered patent requiring correction as follows: Page 4,iines 36 and 37, strike out the wards "The positioning of the carriage109."; page 4, line 145, claim 3, for "needle operating member" readholding means; and line 146, of same claim for "holding means" readneedle operating member; and that the said Letters Patent should he readwith these corrections therein that the same may conform to the recordef the ease in the Patent fi'itice.

Signed and sealed this 6th day of February, A. D. 1934.

M. Hopkins (Seal) Acting Commissioner of Patents.

